Installed a few months ago. The quality of the product seems very good, but after installation I have intermittent brake pulsing. Since the pulsation is intermittent, it may not be due to the rotors, but I now assume it is. Ripple aside, they appear to be pretty good rotors and pads. Update July 2014: The ripple continued to deteriorate to the point where it became unacceptable. Called Revain and they sent a new replacement under warranty in June, almost a year after the original purchaseβ¦